I have no idea what I am talking about, so be warned
Is there enough room between the bottom edge of the frame and the lower deck and the top edge of the frame and the top to cut the window and frame out completely? If you can do that and have a few inches left over, maybe you can replace the windows with flush mounted ones. See this:
http://www.sailnet.com/forums/gear-m...ted-ports.html
Just a thought.
You would have to figure out a way to finish the inside, because the frames won't be available to fill in.
And I promise, I'll stop pushing this! It just looks so cool...